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Wednesday, March 26, 2014

Understaning Heisenberg Uncertainty Principal

Hi ! friends...At the moment I am trying to understand what actually Heisenberg Uncertainty Principal is.I am going to share what helps me to understand the theory.If it helps you too.Please make a comment..for my pleasure.Thanks.


About this video
Heisenberg's uncertainty principle tells us that it is impossible to simultaneously measure the position and momentum of a particle with infinite precision. In our everyday lives we virtually never come up against this limit, hence why it seems peculiar. In this experiment a laser is shone through a narrow slit onto a screen. As the slit is made narrower, the spot on the screen also becomes narrower. But at a certain point, the spot starts becoming wider. This is because the photons of light have been so localised at the slit that their horizontal momentum must become less well defined in order to satisfy Heisenberg's uncertainty principle



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